There has been a "monstrous" jump in the number of mobile phone owners looking to purchase a handset running Google's Android, according to ChangeWave Research.

Of the people who told ChangeWave Research in a mid-December survey that they planned to buy a smartphone in the next 90 days, 21 percent said they expected to purchase a handset powered by Google's Android operating system.

That's a 250 percent surge over the number that named Android as their mobile OS of choice when ChangeWave last surveyed consumers' plans in September.

"That change rivals anything that we've seen in the last three years of the smartphone market," said Paul Carton, ChangeWave's director of research, adding that the sudden surge in consumer interest in Android had "roiled" the market.

"This is an indication that Android has finally caught consumer interest," added Carton, who cited the recent advertising campaign by Motorola for its Milestone smartphone as the reason why interest in the operating system has skyrocketed.

From last place to second

In September, the Android OS was tied for last place in consumers' preference among the major mobile operating systems. Since then, it "has surged into second place ahead of all competitors except the iPhone OS", said Carton.

The iPhone remained the number-one most desired smartphone, according to ChangeWave's latest survey, with 28 percent of those who plan on buying in the next three months saying that they would choose an Apple device.

However, that figure was down four percentage points from September, when 32 percent said that they would acquire an iPhone.

The drop in the iPhone's planned purchasing percentage wasn't unexpected.

"The first two quarters after the introduction of the iPhone 3G [in mid-2008], you saw this huge spike in buying plans, and then a downturn," Carton said.

"Same for the 3GS - actually, the drop-off for the iPhone after the 3GS was far less than the 3G."

Android dreams

Android's leap translated into good news for Motorola and HTC, the most prominent makers of Google-powered handsets, with the former reaping most of the benefit.

Motorola's share of smartphone purchases in the next 90 days shot up from 1 percent in September to 13 percent in December. Carton tagged the company's Droid as the reason.

"[It's] the first increase for Motorola we've seen in three years," said Carton.

All smartphone makers and mobile operating system developers are benefiting from the industry-wide upswing in sales, Carton contended.

Approximately 42 percent of the 4,000-plus American consumers surveyed in December said they owned a smartphone, a three-point increase over September and 10 points higher than a year ago.

"If a rising tide lifts all boats, then just by itself, the increase [in sales] means that it gets dicey to bet against anybody, or to bet on just one company," Carton said. "But Android phones are clearly going to benefit the most from this."

Next page: Bad news for Microsoft and Palm >>

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Bad news for Microsoft

The only mobile OS makers that Carton would say are in real trouble from Android's new popularity were Palm and Microsoft.

"This puts a lot of pressure on the Palm Pre," he said, noting that the Pre didn't have enough time to solidify its place in the smartphone market before Android handsets became the newest and latest rage.

"And Windows Mobile - those are the [operating systems] that have to worry about Android's numbers, they're the ones that have to strike back somehow, not Apple or RIM. It's hard to bet against those two."

Consumers who own an Android-powered smartphone are almost as satisfied with their purchases as are iPhone owners, who have been historically extremely happy with their hardware.

Satisfaction levels

Of the people who told ChangeWave they had an Android handset, 72 percent said they were 'very satisfied', 77 percent of those who reported they own an iPhone answered the same way.

By comparison, only 41 percent of the people who own a BlackBerry said they were very satisfied, and just 25 percent of Windows Mobile-equipped smartphone owners rated their satisfaction using that phrase.

While he acknowledged the buzz around the expected announcement of a Google-branded smartphone, Carton argued that it was unlikely that the Nexus One would kill sales of other Android smartphones.

Reports have pegged T-Mobile as the likely carrier partner for Google's own smartphone. "Look at Google's move not in the short term," Carton said. "But for three or four years from now."

Mobile phone buying advice

See all mobile phone reviews

See also: 40 tips for Google Android phone users

Windows Mobile is on life support

Windows Mobile is doing fine, thanks